From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 96A27C433FE for ; Sat, 25 Sep 2021 14:57:36 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id EEE1060F6D for ; Sat, 25 Sep 2021 14:57:35 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org EEE1060F6D Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=kvack.org Received: by kanga.kvack.org (Postfix) id 2DF8D900002; Sat, 25 Sep 2021 10:57:35 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 28F996B0072; Sat, 25 Sep 2021 10:57:35 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 17DBE900002; Sat, 25 Sep 2021 10:57:35 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0035.hostedemail.com [216.40.44.35]) by kanga.kvack.org (Postfix) with ESMTP id 05D2A6B0071 for ; Sat, 25 Sep 2021 10:57:35 -0400 (EDT) Received: from smtpin01.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay01.hostedemail.com (Postfix) with ESMTP id 9B72C1844AD32 for ; Sat, 25 Sep 2021 14:57:34 +0000 (UTC) X-FDA: 78626399628.01.C332841 Received: from casper.infradead.org (casper.infradead.org [90.155.50.34]) by imf16.hostedemail.com (Postfix) with ESMTP id E7466F00008C for ; Sat, 25 Sep 2021 14:57:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=In-Reply-To:Content-Type:MIME-Version: References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=PyFYuyGZybL7cSTK0f665wfGUh8dtwTELe7jzY8FD1U=; b=G8TN7WiaFixroDwBeMBD/BPUaJ qThH/nviuNwMQjvjmzk5nEYoPB0Tesoef21VSwULA6cbYUS760umGbUtQR33MtNHktReSp38Q1Zx3 q0g/iUSA0juTjCeCPzefvXHQnY1ZdIXXNZdZg0wemCk7jWS91mlmeCYEq8TkNE69ERMgNaiXZk4tX fIV6QgFBgBxJ67EPz7q4tZdsism+N4M3GXQ2IZc4GhftzXgGiAcG2UxjcVE2XvIk7Fwx/g29V7zkW DtIP+qQjmjVbihZ1+8eMs3KcT9fHmT0W2NkOX6DusUpkqjc1xp5U7AYcs5P85A6CPk7OENlX1tcgY QXREXmGA==; Received: from willy by casper.infradead.org with local (Exim 4.94.2 #2 (Red Hat Linux)) id 1mU96b-008BsC-Hu; Sat, 25 Sep 2021 14:56:54 +0000 Date: Sat, 25 Sep 2021 15:56:45 +0100 From: Matthew Wilcox To: David Howells Cc: hch@lst.de, trond.myklebust@primarydata.com, Jens Axboe , "Darrick J. Wong" , linux-block@vger.kernel.org, linux-xfs@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, darrick.wong@oracle.com, viro@zeniv.linux.org.uk, jlayton@kernel.org, torvalds@linux-foundation.org, linux-nfs@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v3 9/9] mm: Remove swap BIO paths and only use DIO paths Message-ID: References: <163250387273.2330363.13240781819520072222.stgit@warthog.procyon.org.uk> <163250396319.2330363.10564506508011638258.stgit@warthog.procyon.org.uk> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <163250396319.2330363.10564506508011638258.stgit@warthog.procyon.org.uk> X-Rspamd-Server: rspam02 X-Rspamd-Queue-Id: E7466F00008C X-Stat-Signature: 8n94firc5ypbexuos86pkwkc6jpy9g58 Authentication-Results: imf16.hostedemail.com; dkim=pass header.d=infradead.org header.s=casper.20170209 header.b=G8TN7Wia; spf=none (imf16.hostedemail.com: domain of willy@infradead.org has no SPF policy when checking 90.155.50.34) smtp.mailfrom=willy@infradead.org; dmarc=none X-HE-Tag: 1632581852-997058 X-Bogosity: Ham, tests=bogofilter, spamicity=0.001265, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Fri, Sep 24, 2021 at 06:19:23PM +0100, David Howells wrote: > Delete the BIO-generating swap read/write paths and always use ->swap_rw(). > This puts the mapping layer in the filesystem. Is SWP_FS_OPS now unused after this patch? Also, do we still need ->swap_activate and ->swap_deactivate?